I love it: people claiming this will allow high quality images off a phone cam.
The front of the lens for a typical phone camera is ~10mm, a decent point and shoot is maybe ~35mm and an SLR lens in the range of 60mm. Light capture area is 78mm^2, 950mm^2 and 2800mm^2. Doesn't look like a factor 4 is going to help that much.
Typical optical quality of a phone cam is slightly better than a disposable film box, Point and shoot digicams range from fair to very good and SLRs are very good and up. A serious SLR owner will have several times as much invested in lenses as they do in bodies. Then there is metering and lighting...
A 20MP imager with a tiny crappy lens is still going to produce phone cam quality pictures, but it will sure eat up the memory space.